How much luggage can I take on the first flight from Guangzhou to Seattle (we are in the process of immigration)? Better write down the size! Thank you!

If it's the first time to go to the United States, after three boxes per person, two boxes are1L. You don't know this, but it can't exceed 23 kilograms (very strict). My mother and I came to America with three boxes and six boxes each. . . . Be careful to bring some dollars. In America, the airport is very big. You need to push a cart at the airport. A car costs 5 yuan money. . . ) So take 20 yuan with you. If you have any questions, post 00 1 on the American Immigration Forum. If you like me, please choose me. Thank you. Have a nice trip.